Gun



'y "',Ptenie'd Aug."l1vrsii925.'

;*isUNITEDg ySTA TES y snEEi),or-vwnrniarowii,i/issoiiue'rirs. 'l

Gun.

V:To whom/it may temere." Y Y' 4 ffWatet-O'Wn, Mass.,county of Middlesex,

` "is a speciiicati'on.

v vlvused bythe Government, orany o'its ocers 'fl-'Government, vor by any other person in the i" .'United; States, Withoutipaymentfto kme of any royalty thereon, inaccordance 'een of March 73,1883., Y Y 15* 'Thelpresent inyentionrelates to a method 'rangeofagun.- -v

i The primary object ofthe present invenlf" generatedby the propelling 'gases atr the moment lof vexplosion may be controlled in charge differenflings maybe attained" 22e Wahine foregoing and 'other Objects: i1;

' v View, `my invention resides in the' steps conf f -stituting my processA vand inY the novel *arl A, .'ff'thedetails of construction hereinafter det i. Y Within the scope of' what is claimed f Without f `departing y from the spiiit'of the invention ".35-'y .For along timeveiforts have'rbeen Vmade 1 to'vary the range of a gun Withoutyaryingi the kpropellant or the angle of lire. Hitherto` i ing ranges. i f

' VAqpreferred embodiment of `VaY control *device'adapted to be employed according to 50 the method constituting this inventionk -isV illustrated in' the accompanying .drawing-J; e Y l I e Y ,particular 'valve openingl Which-has beenfmi i brought into vregister'with -th'e opening/11,y

f v in Which,-

l j Y y y Abpiicatin mee A115114. '1924.y seriailivpf'rzuoezzs', Y (GRANTED -i'i'irnim'riiniie'rorA MARCH 3,-isa3;}2 2 'smrii'lcaiy-f i v Be- ,it- .knew time, i, CHARLES sgittE, a citizen of the United States, and areside'nt.

5 and Stateof.Massaehusetts,'have invented an -i "Im-provementl in Guns, oifwhich therfolloyv-r` f referenda: llqforjemployeesinprosecution of Work for the l tf1-ation.. is the establishmentfofa method' and` -the proyisionof mean'sywhereby the energy ,f

` such zi/manner thatWithv-the same propelling? HVrangement and combinationof parts 'and'fin V vent through *which v'thegase's from the eX-' T plosion chamber 'mayjescape, and by conY V'troll-ii'ig the area vrofi-his yentin such mannerV that VaryingV amounts ofrthes'e gasesfWill beA allowed to escapeffrom thegunwvith vary` barrel provided fWith faV control. i de ce 'f such `f as claimed; v' "i 55y the control fand Referring 'Y' 'drawing numerals of Y'provided i:Withfl'a'Ventatj a"poi-ntlinter-V mediate-rits' lengthfanduinrlsuch positionasaa to permit! escape of the propelling .'ga'fses rrJtheretlrrough@bezlore the' projectile has-leftY `j v 'l l "ftheguiiLY 'The'locationof thisgvent will pref- V of and an apparatus for controlling*the erably' be determined' byl experience andf'will' dependv upon theecaliber. of th'egfthe 70 ranges' 'at-Whichtheigunisjtofb `iiredfthek 'In order to rvVary the'.

trolling theY area lofthe Vent..As ishoWILlV y' Y p employe. a VValver 7,3 pr,eferably rotatably? v f Y "i 1 scribed and claimed', it being understood thatu changes in the precisey embodiment. Voit the f f inventionfherein'disclosed vmay 'be lmade ,mountedas' upon a shaft: 8 yin the chamber ing 1 1 `adapted lto register with theyent` 6 v. of the .barrel so that gases may .pass directly"Vv *rif l` from the gun intothe chamber 9.7 The"blockV k A l0v is lfurther provided With a Vent 12,1com-'I` f' I lmunicating With.` the chamberl9, through y90.v J which they-propelling gases Which. escape] from the gun. may Vpass into.' the 4air {The} j valve .7 will preferably' be of such structure as to permit'ayarying amount of gas-toesf P 1 l cape :Eromthe Vent 6 WithY diieiient settings s w ff Vof the yalve.- In the preferred vembodimeiit1VV of .my vinvention this ValveV Will be ,providedYA f vwith `a number'oi" openingsfl. ,of Various i* sizes which may be rselectively brought intoY y registerfwith the "opening ll.;v Theqvalvef glo/O i i Will preferably be soA inouiitedlwithin'the 'recess ofthezchamber 9 as to prevent any leakage about the :valvefsoV that/theigases Q may onlyy escape from Vthe gunthr'oughi'the w. 60A-m' n 'f he; vinvention described vhereinfmay" be projectile, a given V{propellingchargejand 'A .afgiven angle of fir-'(3,11 hayegfoundthat iii-75Y Y t somemeans isiprovided; for controlling 'the if j i Y areafof theiventsoasto permit iifioreior.lessiy the propellingig'as to' 'e scapeith`at the range :0f the gun mayzthusiibe directlyY controlled..V Y* f1 .Any 'suitablem'eans maybe usedl for cori-V 80j 1U In this case'the'propelling gases pass through the vent 6,1opening 11, and opening 13a of the valve and Will Yexpand AVin the' chamber 14 of the valve. In Vthis case there Will be no escape of the gas from the block 10, thechamber V14 of the valve acting merely as an expansion chamber for the ,gases from the explosion chamber er" the'g un.Y

In Fig. 3 a second open positionof the the valve.

valve is illustrated in Which one of the valve openings 13b has been brought into register With the opening 11 and another of the openings 13a with the vent l2 of the chamber 10.r In this position certainot the gases will escape through the vent 6, the opening llf, and the opening 13b through the valve chamber 14 and the opening 13a of the valve andthe vent 12 to the air. A thirdposition of the valve is illustrated in Fig. 4l Where a greater proportionY of the propelling gases may escape. The maximum opening of th Vvalve is illustrated' in Figo. v

VVTo permit ready escape of the gases Where the valve opening opposite the vent''is of considerable size the valve` openings will preferably be so `proportioned that the area of the openings opposite the vent 12 at any time Will be equal to the area of the opening lopposite the vent 6. In forming the chamber 9 Within the block 10,'theretore, it has been found preferable to make theV recess Within the block of greater size than theY valve so asV to permit tree escape of the gases from the chamber 14Y and vent 12 in any venting position of the valve.

Any suitable means may be employed for manipulating the valve. As shown, the valve is provided With a hand lever 16 and with a spring pressed catch 17, which is. in variousl adapted to selectively enter adjusted positions of the valve suitable recesses 18 on a sector `19 secured to one side of the block 10.

The range of the projectile 20 may be controlled, then, by the various settings of In closed position the maximum eiect of the` propelling gases Will be attained and the maximum range secured. In ther'st open positionV of the valve the capacity of the explosion chamber is merely increased. In the other open positions oi: the valve, varying amounts `of the propelling gases are allowed to escape. By changing the setting of the valve, then, the range is controlled.

`With a device oi the type described, it is possible, then, to directly vary the range With any angular setting of the gun Withoutchanging the propelling charge or Without varying the projectile. The means by which the range is thus controlled is simple in operation, easy to construct, and will not readily get out of order. l/Vith this invenv'tion high angle ifire guns may be readily area of one of the vents, said valve provided with a. chamber therein and with a plurality of openings of different area adapted to be brought selectively into register with one of the vents, said valve being so constructed that in one open position thereof the propelling gases Vmay escape from the explosion chamber to the chamber of the valve and in other open positions thereof the arca of the opening opposite fone of the vents Will be equal tov the area of all openings opposite the other, vent. Y

2. The combination with a gun provided vithl an explosion `chamber of a second t-liainlr-cr secured to the gun and provided with a plurality ot' openings, one of said openings acting as vent between the eX- plosion chamberV and the second chamber and another Vopening acting as a vent for the second chamber, a valve adapted to control the ot one of said vents, said valve pro-vided With a plurality of openings of different arcas adapted to be brought selectively into register with one of the vents, said .valve being so constructed that When the valve is in venting posit-ion the area of the opening opposite one ot the vents Will be equal to the` areas oit all openings opposite the other vent.

3. The. combination With a gun provided with an explosion chamber-and with a vent for said explosion chamber, of adjustable actii as a vent bet-Ween the eztchamber in one position ot said adjustableVV means whereby the area of, the explosion chamber is increased in said position, and means tor locl-ing the adjustable `means in anyY` adjusted position.

The c nibination With a gun provided with an explosion chamber and with avent for said explosion chamber, of adjustable means for controlling the area of said vent, said means being formed with a chamber adapted to.V communicate with the explosion Chamber in one position of the sid adjust# able means, whereby the area, ofsaid explosion chamber. is increased in` said' position.

v5. The combination with a, gun! provided with an explosion.Y chamber, "of ar'wsecond chamber securedto the gun andprovide'd withy a, yplurality of openings, one of Qs'aid openings acting as Va, venti-between the' eX- plofsionyehaniber and the second Chamber, and y another opening acting' as a. ventV for the ysecond chamber, and means,l for controlling theareafof both of the vents.

6.` The v,combina-tion* with a gunV provided with Van explosion hambena secondfchmnber'rsecur'ed to the gnn and provided 'with afplurality of openingS,' one ofthe openings forming*` a vent between the explosion ychamber and theseeond- Chamber, anotherfofthe openings V forming :t vent' for theseeond ohalmfber to the atmosphere, sind' means for Toontrolling' v'the areeV of suchrvents and providing an' explosion chamber "be-Y tween tlheyvents.V 5 Y j 7. :The combination with -agun provided with an explosion chamber, *ai Second ehember seeured to the gun andl provid'edwithjaJ plurality of openings, one of the openings Vforming a vent between the -explosionfohamber Yand the second ehamber, another of the openings Yacting as event from the Seeond chamber tothe atmosphere and Ameans; operable to 'selectively vary Ythey area' ofeneh vents orto varyfthe oapaeity 'of theez'plosion chamber. f v K l f CHARLESS. REED. 

